Submitted for Publication: November 26, 2012; final revision received March 22, 2013; accepted April 24, 2013.
Study concept and design: Doyle, Casselbrant, Mandel, Alper.
Acquisition of data: Swarts, Banks.
Analysis and interpretation of data: Doyle.
Drafting of the manuscript: Doyle, Banks, Casselbrant, Mandel
Critical revision of the manuscript for important intellectual content: Doyle, Swarts, Casselbrant, Mandel, Alper.
Statistical analysis: Doyle.
Obtained funding: Doyle.
Administrative, technical, and material support: Swarts, Banks, Casselbrant, Mandel.
Study supervision: Doyle, Swarts, Alper.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was supported in part by a grant from the National Institutes of Health (P50 DC007667), and by the Hamburg and Eberly Endowments to the Division of Pediatric Otolaryngology, University of Pittsburgh.
Role of the Sponsor: The sponsors did not have input into the design, analyses or interpretation of the data.